Platforms
The layered architecture underneath an estate: what belongs in each layer, and why keeping process logic above the applications is what keeps them replaceable.
What a platform layer is for
Six layers, and the point of each
Infrastructure. Compute, storage, identity and the runtimes underneath everything else. Invisible to the business, and it should stay that way.
The information platform. Classification, discovery, protection and policy enforcement across content wherever it sits. This is where information becomes governable rather than merely stored, and it is what makes anything above it trustworthy.
Information governance and value management. Lifecycle, retention, privacy, defensibility, and the reuse that turns a governed estate into something with a return. This is the layer where trust is established, and it is the one most often skipped on the way to the layer above.
Process management and integration. The orchestration of business-critical information across processes and across systems. Logic lives here rather than inside any single application, which is exactly what keeps the applications replaceable.
Business applications. The systems of record and engagement you already run: the ERP, the CRM, the HR system, the service platform, the collaboration suite. They do the work, and they plug into the layers below rather than owning them.
The control tower. Enterprise visibility: what the estate costs, what it returns, and where value is leaking, while it is leaking rather than a quarter afterwards.
Why the order matters
Value is pulled upward through this stack, not pushed downward into it. An organisation that buys at the application layer and hopes governance follows ends up enforcing rules in one system and not in the four beside it. An organisation that builds the governance layer first finds that each application purchase afterwards is smaller, because the rules are already somewhere else.
The same ordering is what stops any single vendor from owning the estate. When process logic sits above the applications, a platform can be swapped without the business process being rewritten, and that possibility is worth more than any discount negotiated at purchase.
Where this is decided
In practice this is settled in one workshop, by drawing your current estate onto the six layers and marking where the logic actually lives. The gaps are usually obvious within an hour, and they are usually not where the organisation expected. The business processes page covers what runs on top of it.
Most estates already have five of these layers in some form. The conversation worth having is which layer your process logic is currently living in, and whether that is where you would put it on purpose.